ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,559,429, issued on Feb. 24, was assigned to SAINT-GOBAIN CERAMICS & PLASTICS INC. (Worcester, Mass.).
"Porous refractory objects and methods of forming" was invented by Nancy F. Levoy (Concord, Mass.) and Allan R. Case (Worcester, Mass.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A batch of refractory objects may include a plurality of bodies including a ceramic material. The batch may include an average porosity of at least 25% to not greater than 75% for the volume of the batch. The batch may have at least 50 refractory objects, a minimum volume of at least 0.36 cubic meters, and an average batch Porosity Index of not greater than 7."
The patent w...